WD40 is well known for its cleaning activities in fact there is a whole site listing all its other uses (if I remember rightly)including removing stubborn labels off glass bottles. when I use WD for anything I always lubricate with oil after as the WD 40 appears to evaporate leaving no protection and all and rusting/oxidisation will occur. I paid with a siezed outboard the first and only time I didn`t lubricate after use, (I use 3in one or a similar light oil now, depending the use requirements) . Best of luck getting it sorted!